Coiled tubing tools
Double flapper check valve
1.The double flapper check valve is the standard part of the coiled tubing string, when the coiled tubing string or surface equipment is failed to work or damaged, the double flapper check valve will prevent the down-hole liquid refluxing into the tubing string. The double flapper check valve is designed with dual seal structure to improve the reliable of the sealing, the elastomeric seal is mainly for the low pressure sealing and the metal sealing is for the high pressure sealing.
2. Feature
*Dual elastomer seal for each group of flapper
*Designed for working in high & low-pressure wells
* Removable flapper, easy to maintain
*Full bore design
3. Application
All standard Coiled Tubing Operations
Milling operations
Fishing operations
CT Spec.(in) | Max. OD(mm) | Min ID (mm) | W.P. (Psi) | Connection Length |
1.250 | 31.8 | 8.0 | 10000 | 305.0 |
1.500 | 38.0 | 10.0 | 10000 | 335.8 |
1.750 | 44.5 | 16.0 | 10000 | 409.0 |
2.000 | 50.8 | 18.0 | 10000 | 414.5 |
2.250 | 57.0 | 25.0 | 10000 | 454.5 |
2.375 | 60.0 | 26.0 | 10000 | 454.5 |
2.875 | 73.0 | 32.0 | 10000 | 478.5 |
ZZ Top Oil Tools Co.,Ltd, with the professional technical team, specialized in providing cost-effective oilfield
equipment, and at the moment ZZ TOP invested in two sub-factories, one is for Drill stem testing tools
and some downhole tools, The other one is for wellhead equipment.
As one group, ZZ TOP provides the clients highly efficient & expertized service as well as more comprehensive
products to meet the customers' requirements during the work, and insists on "Traceability, Serialization" for
each tools and related parts.
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